menu_item_value(3) - NetBSD Manual Pages

MENU_ITEM_VALUE(3)      NetBSD Library Functions Manual     MENU_ITEM_VALUE(3)


NAME

     item_value, set_item_value, item_selected -- get or set value for an item


LIBRARY

     Curses Menu Library (libmenu, -lmenu)


SYNOPSIS

     #include <menu.h>

     int
     item_value(ITEM *item);

     int
     set_item_value(ITEM *item, int flag);

     int
     item_selected(MENU *menu, int **array);


DESCRIPTION

     The item_value() function returns value of the item.  If the item has
     been selected then this value will be TRUE.  The value can also be set by
     calling set_item_value() to set the value to a defined state.  Setting
     the value to a value other than TRUE or FALSE will have undefined
     results.  The item_selected() function returns the number of items that
     are selected in the menu, that is the number of items whose value is
     TRUE.  The indexes of the selected items will be returned in array which
     will be dynamically allocated to hold the number of indexes.  It is the
     responsibility of the caller to release this storage by calling free(3)
     when the storage is no longer required.  If there are no elements
     selected in the items array then item_selected() will return 0 and array
     will be NULL.  If an error occurs item_selected() will return one of the
     below return values which are less than 0.


RETURN VALUES

     The functions return one of the following error values:

     E_OK              The function was successful.
     E_NOT_CONNECTED   The item is not connected to a menu.
     E_REQUEST_DENIED  The menu driver could not process the request.
     E_SYSTEM_ERROR    A system error occurred whilst processing the request.


SEE ALSO

     curses(3), menus(3)


NOTES

     The header <menu.h> automatically includes both <curses.h> and <eti.h>.

     The function item_selected() is a NetBSD extension and must not be used
     in portable code.

NetBSD 4.0                    September 10, 1999                    NetBSD 4.0